Measuring Equipment

International events
World Bowls’ policy for its official events, and any other international events involving players from its Member National Authorities, is that you can only use the following equipment:

• a box string measure
• callipers
• feeler gauges
• a string measure
• a 30-metre tape
• a boundary string
• a boundary scope and a square.

This equipment should also be the equipment of first choice at domestic events.

Domestic events
You should only use the following alternative equipment at domestic events if the National Authority or Umpiring Body in that particular country permits their use:

• telescopic measure
• bullet string measure
• long tape
• laser measure
• liner siter and mirror